<template>
       <div class="btn">
            <van-button type="primary">主要按钮</van-button>
            <van-button type="info">信息按钮</van-button>
            <van-button type="default">默认按钮</van-button>
            <van-button type="warning">警告按钮</van-button>
            <van-button type="danger">危险按钮</van-button>
       </div>
</template>